Kendrick Henley was one of six CNN viewers chosen to be a part of the 2011 Fit Nation Triathlon Challenge. He trained with Dr. Sanjay Gupta and raced the New York City Triathlon on August 7. CNN is looking for viewers like Henley to join our 2012 Challenge. Click "Share Your Story" to apply.

It has been almost a year since I applied to be a part of CNN Six Pack. When I applied, I had been trying to get in shape for the past several years, but could not seem to follow through. So, I thought if I did the CNN challenge, it would motivate me to get fit or at the very least, hold me accountable. So I decided to submit a video. As I thought about what to say, I decided that I would just be honest and plainly spoke into my webcam and sent my video.

I remember getting the call on Christmas Eve from Dr. Sanjay Gupta indicating that I was chosen to be a member of the Six Pack. I was so excited, but said to myself, “I have to do this.” I must say that this was an incredibly hard challenge for me, but it was so rewarding.

I still remember when I first arrived at Well-Fit Triathlon Training Center for my first workout where I was constantly stopping and could not continuously exercise for more than 2 minutes. Then came the small breakthroughs: my old belt being too big, biking 20 miles, running a mile without stopping and finally crossing the finish line in New York. I cannot believe that I did it. I realized that this journey was going to be more than 6 months and that it would take additional time to reach my goals, but I am so glad that I took this first step. It has helped me begin to change my life.

Underneath the ads, the text reads “Your baby sleeping with you can be just as dangerous.”

The point of the ads is that babies should sleep in cribs, not in adult beds. Between 1990 and 1997, 515 infants died while sleeping in adult beds, according to the Consumer Product Safety Commission. About a quarter of the deaths occurred when parents rolled over on their babies. The rest were due to other causes such as babies suffocating in a soft blanket or getting stuck between the mattress and the bed frame.

The Food and Drug Administration announced Friday that it was revoking its approval of the drug Avastin for metastatic breast cancer after concluding that it has not been shown to be safe and effective for that use.

"The FDA recognizes how hard it is for patients and their families to cope with metastatic breast cancer and how great a need there is for more effective treatments. But patients must have confidence that the drugs they take are both safe and effective for their intended use," said FDA Commissioner Margaret Hamburg, who made the announcement.

“As a doctor, a woman and a parent, I know how frightening a diagnosis of metastatic breast cancer can be and the need for good treatment, but after reviewing the available studies," she said, there is no evidence that Avastin does "help women with metastatic breast cancer live longer or improve their quality of life."

Q: When I get nervous or upset at work, I always get diarrhea. A co-worker says it could be IBS. Really?

It’s possible. What people sometimes call "nervous stomach" can also be irritable bowel syndrome (IBS), a common disorder of the colon that can cause diarrhea, constipation, cramping, and/or bloating.

Stress can trigger it, since some of the same chemicals, such as serotonin, that affect your brain when you’re anxious can change the movement of your intestines, too.

To combat the messy effects of this gut-brain connection, try an over-the-counter antidiarrheal medicine, such as Imodium, on the mornings you know you’ve got something stressful ahead of you, like a meeting with the boss. Relaxation techniques (yoga, cardio, or meditation) may also help.

In any case, see your doctor to confirm that you have IBS; she may want to rule out other conditions, or she may suggest therapy and possibly an antidepressant, among other treatments, to ease the problem.

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.